chakra-core/ChakraCore
GitHub で見るHoisting a var declaration past a lexical declaration of the same name should be a SyntaxError
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#357 opened on 2016年2月19日
BugSeverity: 2help wanted
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説明
Second bullet point of block static semantics and similarly for function body static semantics.
E.g.
let x;
{
var x; // error (already works)
let y;
var y; // should be an error (doesn't work)
{
var y; // should also be an error (doesn't work)
}
}
This applies for var declarations hoisting past all lexical declarations, i.e. let, const, class, function (and generators and async functions).